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Improper Restriction of Recursive Entity References in Apache XMLBeans

Critical severity GitHub Reviewed Published Jun 16, 2021 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

maven org.apache.xmlbeans:xmlbeans (Maven)

Affected versions

< 3.0.0

Patched versions

3.0.0

Description

The XML parsers used by XMLBeans up to version 2.6.0 did not set the properties needed to protect the user from malicious XML input. Vulnerabilities include possibilities for XML Entity Expansion attacks. Affects XMLBeans up to and including v2.6.0.

References

Published by the National Vulnerability Database Jan 14, 2021
Reviewed Apr 6, 2021
Published to the GitHub Advisory Database Jun 16, 2021
Last updated Jan 27, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS score

0.372%
(73rd percentile)

Weaknesses

CVE ID

CVE-2021-23926

GHSA ID

GHSA-mw3r-pfmg-xp92

Source code

No known source code
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